diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 8fc06e3da3a78fd06ca9975f4cfcd2068f7ae7a6..b854c4928f6f2ca304834488a654794098dd7e09 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -62,6 +62,7 @@
 #define SENCODE_END_OF_DATA			0x00
 #define SENCODE_BECOMING_READY			0x04
 #define SENCODE_INIT_CMD_REQUIRED		0x04
+#define SENCODE_UNRECOVERED_READ_ERROR		0x11
 #define SENCODE_PARAM_LIST_LENGTH_ERROR		0x1A
 #define SENCODE_INVALID_COMMAND			0x20
 #define SENCODE_LBA_OUT_OF_RANGE		0x21
@@ -1997,6 +1998,15 @@ static void io_callback(void *context, struct fib * fibptr)
 		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 			     SCSI_SENSE_BUFFERSIZE));
 		break;
+	case ST_MEDERR:
+		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
+			SAM_STAT_CHECK_CONDITION;
+		set_sense(&dev->fsa_dev[cid].sense_data, MEDIUM_ERROR,
+		  SENCODE_UNRECOVERED_READ_ERROR, ASENCODE_NO_SENSE, 0, 0);
+		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
+		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
+			     SCSI_SENSE_BUFFERSIZE));
+		break;
 	default:
 #ifdef AAC_DETAILED_STATUS_INFO
 		printk(KERN_WARNING "io_callback: io failed, status = %d\n",
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index d1f5a66770aad9c993147db2a4a5f984ca91233e..b54c1bfd81a7cd7432d97c06edf2c031110d99af 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1462,6 +1462,7 @@ struct aac_dev
 #define		ST_IO		5
 #define		ST_NXIO		6
 #define		ST_E2BIG	7
+#define		ST_MEDERR	8
 #define		ST_ACCES	13
 #define		ST_EXIST	17
 #define		ST_XDEV		18